by: Isaiah, Olivia
- Crust: "Hard and Rigid, it's the earth's outermost and thinnest layer, only a few miles (5 km) thick under the Oceans and averaging 20 miles (30 km) thick under the continents."
-Mantle: Subdivided into two regions, upper and lower, this dense layer made of hot, semisolid rock is located directly below the crust and is about 1,800 miles (2,900 km) thick.
-Outer Core: Is the only liquid layer of the earth - a sea of mostly iron and nickel. It is roughly 1,800 to 3,200 miles below the surface and about 1,400 miles thick.
-Inner Core: An extremely hot, solid sphere of mostly iron and nickel at the center of the Earth. It is 3,200 to 3,960 miles below the surface and about 750 miles in diameter